Click on a day for an hourly weather forecast
The temperatures in Clinton in September are comfortable with low of 18°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Clinton during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Clinton in September 2025.
If you’re planning to visit Clinton in the near future, we highly recommend that you review the 14 day weather forecast for Clinton before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -2° | 6 | 19 | 6 | 104 mm | Awful | Clinton in January |
| February | 7° / 0° | 7 | 15 | 6 | 120 mm | Awful | Clinton in February |
| March | 12° / 4° | 7 | 20 | 4 | 122 mm | Awful | Clinton in March |
| April | 18° / 9° | 8 | 22 | 0 | 130 mm | Ok | Clinton in April |
| May | 23° / 14° | 8 | 23 | 0 | 156 mm | Good | Clinton in May |
| June | 28° / 19° | 7 | 23 | 0 | 154 mm | Good | Clinton in June |
| July | 31° / 22° | 8 | 23 | 0 | 184 mm | Ok | Clinton in July |
| August | 30° / 21° | 8 | 23 | 0 | 178 mm | Ok | Clinton in August |
| September | 26° / 18° | 5 | 25 | 0 | 143 mm | Perfect | Clinton in September |
| October | 20° / 12° | 5 | 26 | 0 | 151 mm | Good | Clinton in October |
| November | 13° / 6° | 5 | 24 | 1 | 95 mm | Ok | Clinton in November |
| December | 8° / 2° | 7 | 21 | 3 | 136 mm | Awful | Clinton in December |